Setting The Standard In Service
®
Stockham Iron Valves
3
The Stockham Pledge
Stockham is committed to setting the standard in quality service to the Commercial Construction industry.
Our pledge to our customers is:
• Afriendlyvoiceeverytimeyoucall • Quick response to your quotes and questions • On-timedelivery • Accurateshipments
Setting the Standard in Service
4
Iron Valves
General Information .................................................................................................................................5-8
Globe and Angle Valves Class 125 ................................................................................................................................9-10,34 Class250 ....................................................................................................................................11-13 Class300 ......................................................................................................................................... 14
Gate Valves Class 125 ...................................................................................................................15-20,23,35-36 Class150 ....................................................................................................................................21-22 Class250 ....................................................................................................................................24-25
Swing Check Valves Class 125 ..............................................................................................................................26-29,37 Class250 ......................................................................................................................................... 30 Class300 ......................................................................................................................................... 31
Wafer Check Valves 200CWP ......................................................................................................................................... 32 Class 125 ......................................................................................................................................... 33
International Iron Valves Class 125 ....................................................................................................................................34-37
Malleable Valves Globe ............................................................................................................................................... 14 Gate ............................................................................................................................................21-23 Check ............................................................................................................................................... 31
Stop Check Valves Y-Pattern .......................................................................................................................................... 12 AnglePattern ................................................................................................................................... 13
Technical Data .......................................................................................................................................38-40
Figure Number IndexIRON VALVES
FIG. NO. PAGEF-532 .................................. 11F-540 .................................. 12F-541 ..................................13F-661 ..................................24F-667 .................................. 25F-947 ..................................30G-512 .................................... 9G-512-I ...............................34G-515 ..................................10G-574 ..................................14G-608 .................................. 15G-612 ..................................16G-612-I ...............................35G-613 ..................................17G-620 ..................................18
IRON VALVESFIG. NO PAGE G-623 .................................. 19G-623-I ...............................36G-624 ..................................20G-675 .................................. 21G-676 ..................................23G-679 .................................. 22G-927 ..................................26G-931 ..................................27G-931-I ...............................37G-931L&W .......................28G-933 .................................. 29G-975 ..................................31WG-961 ..............................32WG-970 ..............................33
5
GLOBE Stockham NIBCO MilwaukeeClass125 B-16 T-211-B 502Class300SSTrim B-74 T-276AP 593A B-66 T-275-B 572
GATEClass125RS-Thread B-100 T-111 148Class125NRS-Thread B-103 T-113 105Class125RS-Solder B-108 S-111 149Class125NRS-Solder B-104 S-113 115Class150UnionBonnet B-120 T-134 1151Class300SSTrim B-145 T-174-SS 1184
CHECKClass125Thread B-319Y T-413-BY 509Class125Solder B-309Y S-413-B 1509Class300SwingCheck B-375 T-473-B 507 B-321 T-433-B 515
IRONGATE Stockham NIBCO Milwaukee Powell WalworthClass125NRS G-612 F-619 F2882A 1787 W719FClass125OS&Y G-623 F-617-0 F2885A 1793 W726FClass250OS&Y F-667 F-667-0 F2894A 1797 W786F
GLOBEClass125 G-512 F-718-B F2981A 241 W906F
SWING CHECKClass125Flanged G-931 F-918-B F2974A 559 W928F
STOP CHECKClass250Straight-wayY-Pattern F-540 ---- ----- ----- ----Class250AngleY-Pattern F-541 F-869-B ----- ----- ----
BRONZE
For Commonly Used Valves
Iron Valves Cross Reference
6
Stockham iron body valves are proven performers in mechanical systems of commercial buildings throughout America. Chemical plants, steel mills, shipyards, refineries, pulp and paper mills, and utilities have also found that Stockham iron body valves do the job better and longer for their many general services.
QUALITY MANAGEMENTStockhamiscommittedtoaphilosophyoftotalqualitymanagement.It beginswith design, to complywith pertinentMSS andASMEStandards. Continuous improvement are applied in a process to improve materials and services to meet or exceed customer needs.
MATERIALSTheironusedasthebasicvalvematerialconformstothechemicalandphysicalrequirementsoftheAmericanSocietyofTestingandMaterialsA-126ClassBforCastIronValves.
RATED WORKING PRESSURESThepressure-temperatureratingsofStockhamironbodyvalvesinthiscatalogsectionareasfollows:
Thetemperatureshownforacorrespondingpressurerating is thetemperatureofthepressurecontainingshellofthecomponent.Ingeneral,thistemperatureisthesameasthatofthecontainedfluid.Compositiondiscvalvesareexcludedfromtheseratings.
DESIGN: GATE VALVES-CLASSES 125 and 250
Stem—Allstemsaredesignedforamplestrengthandaremachinedtofunctioneasily.BackseatsareprovidedonOS&Yvalves.
Packing Gland Assembly—Glands andglandflangeshave aballandsocketjointwhichassuresalignment.Itprovidesforproperpackingcompressionwithoutbindingagainstthestem.
Packing—Non-Asbestos.
Disc—Strong, solidwedgediscs have disc guides for precisionseatingwithminimumfrictionagainstbodyseats.
Yoke and Bonnet—One-pieceyokebonnetsareutilizedon12"andsmallersizeOS&Yvalves. Largersizeshaveseparateyokesand bonnets.
Stuffing Box—NRS valves have stuffing boxes assembled tobonnets to accommodate the packing gland assembly.
Seat Ring—Buttress-type seat rings are bottom-seatedwithaccuratelymachinedfacestomatchdiscfaces.
Handwheel or Operating Nut—Handwheelshavelargediametersforgoodleverage.Operatingnuts,2"squaremaybefurnishedonanyNRSvalveifspecified.
PRESSURE (PSIG) CLASS 125 CLASS 250 TEMPERATURE CAST IRON CAST IRON
°F SIZES SIZES SIZES SIZES SIZES 2-12 14-24 30-36 2-12 14-24 -20to100 200 150 150 500 300 150 200 150 150 500 300 200 190 135 115 460 280 225 180 130 100 440 270 250 175 125 85 415 260 275 170 120 65 395 250 300 165 110 50 375 240 325 155 105 355 230 350 150 100 335 220 375 145 315 210 400 140 290 200 425 130 270 450 125 250 500 600 650
Iron Valves
7
Yoke Bushing—YokebushingsonOS&YvalveshaveAcmethreadsfor stemengagement, andhandwheels fit snugly over bushings.Handwheels are securely locked to yokebushingswith locknuts.Bolted yoke cap secures the yoke bushing to yoke.
Body—Bodysectionsareevenlydistributedformaximumstrength.DimensionsanddrillingofendflangesofcastironvalvesconformtotheASMEStandardB16.1forClasses125and250CastIronFlanges.Face-to-facedimensionscomplywithASMEStandardB16.10.
DESIGN: GLOBE AND ANGLE VALVES-OUTSIDE SCREW AND YOKE-CLASSES 125 and 250
Stem—StemsaremachinedwithAcmethreadswhichfullyengagethe yoke bushing threads at all times.
Packing Gland Assembly—Glands andglandflangeshave aballandsocketjointwhichassuresalignmentandproperpackingcompression.
Packing—Non-Asbestos.
Backseat Bushing—Bushings are threaded into bonnets,providingbeveledseatsforbackseatingonstemshoulders.
Disc—BronzediscsarefurnishedinClass125and250globeandanglevalves,whichareregrindable.Discnutsthreadintodisc.TheClass250nonreturnstop-checkvalveconformstoASMEboilercodesandutilizesadashpotandpistondesigntocushionthediscaction.
Yoke Bonnet—One-piece yokebonnets are fastened to bodieswithcapscrews.
Seat Rings—Seat rings are bottom seated and are readily renewable.
Handwheel—Handwheels have large diameters for ampleleverage.
Yoke Bushing—AccurateAcmethreadsengagestemthreads.Setscrewsfastenyokebushingstoyoke.
Body—Bodiesaredesignedwithuniformsectionsevenlydistributedformaximumstrength.DimensionsanddrillingofendflangesonflangedvalvesconformtotheASMEStandardB16.1forClasses125and250CastIronFlanges.Face-to-facedimensionscomplywiththeASMEStandardB16.10.
DESIGN:SWING CHECK VALVES-CLASSES 125 and 250
Cap—Caps are bolted to bodies.
Hinge—Hingesarepreciselydrilledforassemblywithdiscs.
Hinge Pin—Pinsarelocatedbysideplugsscrewedintobodies.
Disc—Discfacesareaccuratelymachinedfortightsealwithseatrings.
Seat Ring—Buttress design of renewable seat rings providesbottom seating and good strength.
Body—DimensionsanddrillingofendflangesonflangedvalvesconformtoASMEStandardB16.1forClasses125and250CastIronFlanges.Face-to-facedimensionscomplywithASMEB16.10.
Figure G-931 L&W: 2"-12" comestandardwith an adjustable lever armwhich canbeorientatedinanypositionin15°increments.Thesevalvescanbeinstalledinhorizontallinesorinverticallineswithupwardflow.14"-24"valvesmustbespecifiedatthetimeofinquiryandorderwiththeinstallationorientationforhorizontalorvertical-upwardflow.
Iron Valves
8
ACCESSORIES—Stockhamironbodyvalvesmaybefurnishedwithmotor operators, gearings, bypasses, floorstands, extensionstems,leverandweightattachmentorotheraccessories.
MARKING—Numeralsindicatethesizeandpressureclass.Castarrowsindicatedirectionofflowoncheck,globeandanglevalves.
TESTING AND INSPECTION—Beforeshipment,eachvalveisindividually testedunderpressure for soundnessof castings andtightclosuretoMSSStandards.
FINISH—Externalcastironpartsarecoatedwithadurableblackfinish.
WEIGHTS AND DIMENSIONS—Dimensionsandweightsshowninthiscatalogsectionarefurnishedforestimatingpurposesonlyandaresubjecttochangewithoutnotice.Itisourintenttomaintainbasicdimensionalrequirementsofacceptedstandards.
CV COEFFICIENTS*(For estimating purposes only)
Size Gate Globe Swing Check 2 327 50 131 2½ 480 74 192 3 742 114 297 4 1314 202 526 5 2129 327 852 6 3175 487 1270 8 5691 873 2276 10 8970 1376 3588 12 13351 — 5340 14 16277 — 6511 16 21562 — 8625 18 28715 — 11486 20 35760 — 14304 24 52165 — 20866 30 82563 — — 36 119910 — —
*Fully open. CV=GPM@1PSI∆P,60°FWater
TheabovevaluesforSwingCheckValvesarecorrectonlywhenthevalveisfullyopen.Thiscorrespondstoavelocityof6ft./sec.forwaterflow.
Iron Valves
9
15
2
28
302526
21
4
1
2714
13
122024
17
6
29
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
IndustryStandardsComplieswithMSSSP-85Type1
Seepage6forPressureTemperatureRatings
M
C
BOpen
MaterialsofConstruction
*Notshown
Iron Globe ValvesFigure G-512
Class 125 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
No. Description Material1 Body Hi-Str.CastIron2 Bonnet Hi-Str.CastIron
4 Disc(2"-6")Bronze(8"-10")CastIron
6 Body Seat Ring Bronze7 Disc Seat Ring* (8"&10")Bronze8 Stem ManganeseBronze9 Yoke Bushing ManganeseBronze12 Packing Non-AsbestosRings
13 Gland(2"-4")Brass(5"-10")Bronze
14 Gland Flange Ductile15 Handwheel Ductile17 Disc Stem Ring Bronze20 Stem Hole Bushing Brass21 LockingDevice (2"-6")18-8SSTSheet22 Disc Guide Stem* (8"&10")Brass23 DiscGuideStemPin* (8"&10")Brass24 Bonnet Gasket Non-AsbestosSheet25 Bonnet Studs Steel26 Bonnet Stud Nuts Steel27 Gland Studs Naval Brass28 Gland Stud Nuts Brass29 HandwheelNut Steel-Phos.Coated30 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B C M
211.12 8.00 8.00 35(282) (203) (203) (15)
2 1⁄211.50 8.00 8.50 40(292) (203) (216) (18)
313.25 9.00 9.50 57(337) (229) (241) (26)
415.50 10.00 11.50 95(394) (254) (292) (43)
517.50 10.00 13.00 126(445) (254) (330) (57)
619.50 12.00 14.00 176(495) (305) (356) (80)
825.00 16.00 19.50 344(635) (406) (495) (156)
1030.50 18.00 24.50 570(775) (457) (622) (259)
10
Iron Angle Valves
IndustryStandardsComplieswithMSSSP-85Type2
Seepage6forPressureTemperatureRatings
MaterialsofConstruction
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
8
28
30
9
14
2
1
29
272526
4
12
20
13
17
15
6
21
24
AA OpenBB Closed
A
A
H
K
P
Figure G-515Class 125 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged End
No. Description Material1 Body CastIron2 Bonnet CastIron4 Disc Bronze6 Seat Ring Bronze8 Stem ManganeseBronze9 Yoke Bushing ManganeseBronze12 Packing Non-AsbestosRings
13 Gland(2"-4")Brass(6")Bronze
14 Gland Flange Ductile15 Handwheel Ductile17 Disc Stem Ring Bronze20 Stem Hole Bushing Brass21 LockingDevice 18-8StainlessSteel24 Bonnet Gasket Non-AsbestosSheet25 Bonnet Studs Carbon Steel26 Bonnet Stud Nuts Carbon Steel27 Gland Studs Naval Brass28 Gland Stud Nuts Brass29 HandwheelNut Carbon Steel30 IdentificationPlate Aluminum
ValveSize
DimensionsWT
A H K P AA BB
24.00 2.00 0.88 8.00 11.00 10.25 32(102) (51) (22) (203) (279) (260) (15)
2 1⁄24.25 2.50 0.88 8.00 11.50 10.50 38(108) (64) (22) (203) (292) (267) (17)
34.75 3.00 1.00 9.00 12.75 11.75 54(121) (76) (25) (229) (324) (299) (25)
45.75 4.00 1.12 10.00 15.00 13.75 88(146) (102) (29) (254) (381) (349) (40)
67.00 6.00 1.25 12.00 19.50 17.75 158(178) (152) (32) (305) (495) (451) (72)
11
IndustryStandards ComplieswithMSSSP-85Type1
Seepage6forPressureTemperatureRatings
M
C
BOpen
MaterialsofConstruction
*NotShown
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
2915
9
2
28
3027
2526
12
13
148
24
17
2147
23
622
1
Iron Globe ValvesFigure F-532
Class 250 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
No. Description Material1 Body Hi-Str.CastIron2 Bonnet Hi-Str.CastIron
4 Disc(2"-3")Bronze(4"-8")CastIron
6 Body Seat Ring Bronze7 Disc Seat Ring Bronze8 Stem ManganeseBronze9 Yoke Bushing ManganeseBronze12 Packing Non-AsbestosRings13 Gland Bronze
14 Gland Flange(2",3"&6")Steel(2½",4",5"&8")Mall.Iron
15 Handwheel MalleableIron17 Disc Stem Ring Bronze21 LockingDevice (2"-5")18-8SSTSheet22 Disc Guide Stem Steel23 DiscGuideStemPin Steel24 Gasket Non-AsbestosSheet25 Bonnet Studs Steel26 Bonnet Stud Nuts Steel27 Gland Studs Steel-Phos.Coated28 Gland Stud Nuts Steel-Phos.Coated29 HandwheelNut Steel-Phos.Coated30 IdentificationPlate Aluminum31 Disc-DiscStemRingPin* Steel
ValveSize
DimensionsWT
B C M
213.75 9.00 10.50 62(349) (229) (267) (28)
2 1⁄214.75 10.00 11.50 82(375) (254) (292) (37)
316.50 10.00 12.50 118(419) (254) (318) (54)
418.50 12.00 14.00 167(470) (305) (356) (76)
623.25 16.00 17.50 320(591) (406) (445) (145)
828.50 20.00 21.00 570(724) (508) (533) (259)
12
Iron Stop Check Valves
112117
716
243
15
1
195
615
10
9
8
1112
K
J
LOpen
A
E
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
MaterialsofConstruction
*NotShown**Sizes5"andsmallermadewithoutPistonRingSeepages38-40forsizingandotherTechnicalData
Figure F-540Class 250 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
Features• Valve designed for steam applications that operate between 100 and
250 psig.• The Stop-Check feature of this valve requires a minimum of 50 psi
pressure differential between piping system and boiler to operate properly.
• For installation between boilers suppling the same steam header, and positioned with pressure under the disc. Straightway is for horizontal or vertical line with upward flow. Angle valves are for "horizontal-downward" or "upward-horizontal" flow.
• These valves will perform the four following important functions:1. Act as an automatic-non return valve applied as a containment device
to prevent gross backflow of steam from main header to boiler in case the boiler fails.
2. Assist in cutting out boiler, when ceasing to fire. In this case, valve disc automatically closes to restrict backflow of steam to the boiler.
3. Assist in returning boiler after a shutdown.4. Restricts backflow of steam from header into boiler which has been
shut down and accidently opened. The check valve feature should not be relied upon for primary shut-off.
• Cylindrical shaped disc is the only pressure-actuated part, light in weight with ample guiding surface. It is specially designed to produce a maximum lift at minimum velocities. There are no wing guides to cause "spinning" with resultant rapid wear.
• Long throttling lip on disc retards flow when seating position is approached. Disc chattering is prevented and wiredrawing of seating surfaces is reduced.
• Flat Seats, accurately machined, facilitate true seating.• Removable cast iron liner guides the disc throughout its full travel.
Being entirely independent of the body, it is not subject to distortion by expansion strains.
• Piston Ring 6" and larger adds to dashpot's ability to avoid rapid disc movements. Where pulsations are extremely severe, two rings can be installed.
• Dashpot is self-contained in the liner. It provides an effective cushion for the disc to prevent pipe line vibrations or hammering on the seat at low velocities or on pulsating loads.
• Flanges conform to ASME B16.1. Flanges have 1/16" raised face with concentric grooves.
• The body has integral bosses for drain connections. The bosses are tapped and plugged.
• Determining the proper valve size needed is important. The size of a stop check valve should be based on the boiler capacity and steam flow through the valve, rather than on the size of the boiler outlet or existing piping.
No. Description Material1 Body GrayCastIron2 Bonnet GrayCastIron
3 Disc(21/2",3",4",5")SteamBronze(6",8",10")GrayCastIron
4 Liner(21/2",3",4",5")GrayCastIron(6",8",10")GrayCastIron-NickelPlated
5 Body Seat Ring SteamBronze6 Stem CarbonSteel-NickelPlated7 Packing Non-AsbestosRings
8 Gland(21/2",3",4",5",6")Brass(8",10")Brass
9 Gland Flange DuctileIron10 Yoke Bushing ManganeseBronze
11 Handwheel(21/2",3",4",5",6")DuctileIron(8",10")Brass
12 HandwheelNut Carbon Steel13 PistonRing** (6",8",10")ChromeVanadiumSteel14 ThrottlingLip* (6",8",10")SteamBronze15 DrainPlug CarbonSteel-ZincPlated
16Bonnet Studs Carbon SteelBonnet Stud Nuts Carbon Steel
17Gland Studs CarbonSteel-ZincPlatedGland Stud Nuts CarbonSteel-ZincPlated
18 Bonnet Gasket* Non-AsbestosSheet19 Seat Ring Gasket Non-AsbestosSheet20 LockingPin* (6",8",10")CarbonSteel-ZincPlated21 IDPlate Aluminum
ValveSize
DimensionsWT
A E J K L
2 1⁄213.00 7.50 15.75 9.00 5.00 103(330) (191) (400) (229) (127) (47)
314.75 8.25 19.75 10.00 7.25 140(375) (210) (502) (254) (184) (64)
417.00 10.00 21.75 10.00 7.75 226(432) (254) (552) (254) (197) (103)
519.00 11.00 25.75 14.00 10.50 307(483) (279) (654) (356) (267) (139)
621.50 12.50 29.25 16.00 11.75 420(546) (318) (743) (406) (298) (191)
826.00 15.00 36.75 20.00 16.25 737(660) (381) (933) (508) (413) (335)
1030.00 17.50 41.75 20.00 17.75 1250(762) (445) (1,060) (508) (451) (568)
13
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
112117
7
162
43
151
195
10
9
8
1112
K
JOpen
E
A
A
MaterialsofConstruction
*NotShown**Sizes5"andsmallermadewithoutPistonRingSeepages38-40forsizingandotherTechnicalData
Iron Angle Stop Check ValvesFigure F-541
Class 250 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
Features• Valve designed for steam applications that operate between 100 and
250 psig.• The Stop-Check feature of this valve requires a minimum of 50 psi
pressure differential between piping system and boiler to operate properly.
• For installation between boilers suppling the same steam header, and positioned with pressure under the disc. Straightway is for horizontal or vertical line with upward flow. Angle valves are for "horizontal-downward" or "upward-horizontal" flow.
• These valves will perform the four following important functions:1. Act as an automatic-non return valve applied as a containment device
to prevent gross backflow of steam from main header to boiler in case the boiler fails.
2. Assist in cutting out boiler, when ceasing to fire. In this case, valve disc automatically closes to restrict backflow of steam to the boiler.
3. Assist in returning boiler after a shutdown.4. Restricts backflow of steam from header into boiler which has been
shut down and accidently opened. The check valve feature should not be relied upon for primary shut-off.
• Cylindrical shaped disc is the only pressure-actuated part, light in weight with ample guiding surface. It is specially designed to produce a maximum lift at minimum velocities. There are no wing guides to cause "spinning" with resultant rapid wear.
• Long throttling lip on disc retards flow when seating position is approached. Disc chattering is prevented and wiredrawing of seating surfaces is reduced.
• Flat Seats, accurately machined, facilitate true seating.• Removable cast iron liner guides the disc throughout its full travel.
Being entirely independent of the body, it is not subject to distortion by expansion strains.
• Piston Ring 6" and larger adds to dashpot's ability to avoid rapid disc movements. Where pulsations are extremely severe, two rings can be installed.
• Dashpot is self-contained in the liner. It provides an effective cushion for the disc to prevent pipe line vibrations or hammering on the seat at low velocities or on pulsating loads.
• Flanges conform to ASME B16.1. Flanges have 1/16" raised face with concentric grooves.
• The body has integral bosses for drain connections. The bosses are tapped and plugged.
• Determining the proper valve size needed is important. The size of a stop check valve should be based on the boiler capacity and steam flow through the valve, rather than on the size of the boiler outlet or existing piping.
No. Description Material1 Body GrayCastIron2 Bonnet GrayCastIron
3 Disc(21/2",3",4",5")SteamBronze(6",8",10")GrayCastIron
4 Liner(21/2",3",4",5")GrayCastIron(6",8",10")GrayCastIron-NickelPlated
5 Body Seat Ring SteamBronze6 Stem CarbonSteel-NickelPlated7 Packing Non-AsbestosRings
8 Gland(21/2",3",4",5",6")Brass(8",10")Brass
9 Gland Flange DuctileIron10 Yoke Bushing ManganeseBronze
11 Handwheel(21/2",3",4",5",6")DuctileIron(8",10")Brass
12 HandwheelNut Carbon Steel13 PistonRing** (6",8",10")ChromeVanadiumSteel14 ThrottlingLip* (6",8",10")SteamBronze15 DrainPlug CarbonSteel-ZincPlated
16Bonnet Studs Carbon SteelBonnet Stud Nuts Carbon Steel
17Gland Studs CarbonSteel-ZincPlatedGland Stud Nuts CarbonSteel-ZincPlated
18 Bonnet Gasket* Non-AsbestosSheet19 Seat Ring Gasket Non-AsbestosSheet20 LockingPin* (6",8",10")CarbonSteel-ZincPlated21 IDPlate Aluminum
Valve Size
DimensionsWT
A E J K
2 1⁄25.75 7.50 13.25 9.00 86(146) (191) (337) (229) (39)
36.25 8.25 14.75 10.00 123(159) (210) (375) (254) (55)
47.00 10.00 16.25 10.00 186(178) (254) (413) (254) (84)
57.88 11.00 19.50 14.00 250(200) (279) (495) (356) (113)
68.75 12.50 22.50 16.00 340(222) (318) (572) (406) (154)
810.50 15.00 28.75 20.00 640(267) (381) (730) (508) (291)
1012.25 17.50 32.50 20.00 1025(311) (445) (826) (508) (465)
14
Malleable Iron Globe ValvesFigure G-574
Class 300 • Union Bonnet • Rising Stem • Nickel Plug • Threaded Ends
C
BOpen
M
13
3
8
6
14
7
2
511
9
1
10
4
12
Temperature Valve Working Pressures, Ratings Non-shock, PSI °F °C PSI kPa -20to150 -30to65 1000 6894 200 93 960 6618 250 121 925 6377 300 149 890 6136 350 177 850 5860 400 205 810 5584 450 232 775 5343 500 260 740 5102 550 288 700 4826
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
MaterialsofConstructionNo. Description Material1 Body MalleableIron2 Bonnet MalleableIron3 Stem MalleableIron4 Plug NickelAlloy5 UnionRing MalleableIron6 Packing AsbestosFree7 Gland MildSteel8 PackingNut MalleableIron9 Body Seat Ring 13%ChromeSteel10 Disc Stem Ring 13%ChromeSteel11 LockWasher 18-8StainlessSteel12 Handwheel MalleableIron13 HandwheelNut Steel(Phosphated)14 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B C M
1⁄45.38 2.56 3.62 1.8(137) (65) (92) (.82)
3⁄85.38 2.56 3.62 1.8(137) (65) (92) (.82)
1⁄25.24 2.56 2.80 1.54(133) (65) (71) (.74)
3⁄45.31 2.75 3.31 2.53(135) (70) (84) (1.14)
16.73 3.06 3.90 3.8(171) (78) (99) (1.71)
11⁄47.68 3.62 4.41 5.93(195) (92) (112) (2.67)
11⁄28.62 4.06 4.92 8.07(219) (103) (125) (3.63)
29.80 4.75 5.98 12.76(249) (121) (152) (5.74)
15
Figure G-608Class 125 • Bolted Bonnet • Non-Rising Stem • Bronze Trim • Threaded Ends
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
IndustryStandardsComplieswithMSSSP-70Type1andWW-V-58Type1,Class1
Seepage6forPressureTemperatureRatings
MaterialsofConstruction
*Notshown
8
23
4
1
2
7
6
21
15
27
26
2811
13
12
24
25
B
A
C
Iron Gate Valves
No. Description Material1 Body CastIron2 Bonnet CastIron
4 Disc(2"-3")Bronze(4")CastIron
6 Seat Ring Bronze7 Disc Ring (4")Bronze8 Stem ManganeseBronze
11 StuffingBox Ductile12 Packing Non-AsbestosRings13 Gland Flange Ductile 15 Handwheel Ductile21 HandwheelNut Carbon Steel 23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel 25 Bonnet Bolt Nut Carbon Steel26 Gland Bolt Carbon Steel 27 Gland Bolt Nut CarbonSteelEZP28 StuffingBoxGasket Non-AsbestosSheet34 StuffingBoxBolt* Carbon Steel35 StuffingBoxBoltNut* Carbon Steel
ValveSize
DimensionsWT
A B C
25.38 11.31 8.00 25(137) (287) (203) (11)
2 1⁄26.62 12.40 8.00 31(168) (315) (203) (14)
37.00 13.25 8.00 44(178) (337) (203) (20)
48.00 16.31 10.00 71(203) (414) (254) (32)
16
Figure G-612Class 125 • Bolted Bonnet • Non-Rising Stem • Bronze Trim • Flanged Ends
IndustryStandardsComplieswithMSSSP-70Type1
Seepage6forPressureTemperatureRatings
M
C
B
2115
13
12
2
27
26
1128
23
8
7
4
6
1
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
MaterialsofConstruction
*Notshown
Iron Gate Valves
No. Description Material1 Body CastIron2 Bonnet CastIron
4 Disc(2"-3")Bronze(4"-30")CastIron
6 Seat Ring(2"-12")Bronze(14"-30")Bronze
7 Disc Ring(4"-12")Bronze(14"-30")Bronze
8 Stem(2"-12")ManganeseBronze(14"-30")Copper-SiliconBronze
11 StuffingBox(2"-8")Ductile(10"-30"CastIron
12 Packing Non-AsbestosRings
13 Gland Flange(2"-8")Ductile(14"-30")Ductile
14 Gland* (10"-12")Bronze15 Handwheel Ductile21 HandwheelNut Carbon Steel23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel26 Gland Bolt Carbon Steel27 Gland Bolt Nut CarbonSteelEZP28 StuffingBoxGasket Non-AsbestosSheet34 StuffingBoxBolt* Carbon Steel35 StuffingBoxBoltNut* Carbon Steel55 GlandFollower* (10"-12")Ductile
ValveSize
DimensionsWT
B C M
211.31 8.00 7.00 30(287) (203) (178) (14)
2 1⁄212.40 8.00 7.50 40(315) (203) (191) (18)
313.25 8.00 8.00 56(337) (203) (203) (25)
416.31 10.00 9.00 90(414) (254) (229) (41)
518.00 10.00 10.00 126(457) (254) (254) (57)
620.69 12.00 10.50 152(526) (305) (267) (68)
824.12 14.00 11.50 260(613) (356) (292) (117)
1033.00 20.00 13.00 490(838) (508) (330) (222)
1236.50 20.00 14.00 672(927) (508) (356) (304)
1440.50 20.00 15.00 968(1029) (508) (381) (440)
1648.00 22.00 16.00 1180(1219) (559) (406) (535)
1850.75 22.00 17.00 1701(1289) (559) (432) (772)
2056.12 24.00 18.00 2188(1426) (610) (457) (993)
2464.00 30.00 20.00 3150(1626) (762) (508) (1432)
3086.63 30.00 24.00 1701(2200) (762) (610) (772)
17
Figure G-613Class 125 • Bolted Bonnet • Non-Rising Stem • All Iron • Flanged Ends
IndustryStandardsComplieswithMSSSP-70Type1
Seepage6forPressureTemperatureRatings
M
C
B
2115
27
26
11
28
9
4
1
13
1228
242325
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
MaterialsofConstruction
*Notshown
Iron Gate Valves
No. Description Material
1 Body CastIron2 Bonnet CastIron4 Disc CastIron8 Stem Steel-NickelPlated9 Disc Nut (4"-8")13CRStainlessSteel11 StuffingBox Ductile12 Packing Non-AsbestosRings13 Gland Flange Ductile15 Handwheel Ductile21 HandwheelNut Carbon Steel23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel26 Gland Bolt Carbon Steel27 Gland Bolt Nut CarbonSteelEZP28 StuffingBoxGasket Non-AsbestosSheet34 StuffingBoxBolt* Carbon Steel35 StuffingBoxBoltNut* Carbon Steel
Valve Size
DimesionsWT
B C M
211.31 8.00 7.00 30(287) (203) (178) (14)
2 1⁄212.40 8.00 7.50 44(315) (203) (191) (20)
313.25 8.00 8.00 56(337) (203) (203) (25)
416.31 10.00 9.00 91(414) (254) (229) (41)
518.00 10.00 10.00 126(457) (254) (254) (57)
620.69 12.00 10.50 152(526) (305) (267) (69)
824.12 14.00 11.50 260(613) (356) (292) (118)
18
Figure G-620Class 125 • Bolted Bonnet • OS&Y • Bronze Trim • Threaded Ends
IndustryStandardsComplieswithMSSSP-70Type1andWW-V-58Type1,Class1
Seepage6forPressureTemperatureRatings
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
MaterialsofConstruction
*Notshown
2325
8
24
4
1
2
7
6
2115
9
48
13
12
26
27
47
B Open
A
C
D Closed
Iron Gate Valves
No. Description Material1 Body CastIron2 Yoke Bonnet CastIron
4
Disc (2")Bronze(21/2"-3")Bronze(4")CastIron
6 Seat Ring Bronze7 Disc Ring (4")Bronze8 Stem ManganeseBronze9 Yoke Sleeve ManganeseBronze12 Packing Non-AsbestosRings13 Gland Ductile15 Handwheel Ductile21 HandwheelNut Sintered Nickel Steel23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel26 Gland Bolt Carbon Steel27 Gland Bolt Nut CarbonSteelEZP46 Yoke Cap* Ductile47 Yoke Cap Bolt Carbon Steel48 Yoke Cap Bolt Nut Carbon Steel
ValveSize
DimensionsWT
A B C D
25.38 14.75 8.00 12.50 25(137) (375) (203) (318) (11)
2 1⁄26.62 16.06 8.00 13.31 38(168) (408) (203) (338) (17)
37.00 17.38 8.00 13.88 46(178) (441) (203) (353) (21)
48.00 21.44 10.00 17.06 77(203) (545) (254) (433) (35)
19
Figure G-623Class 125 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
21
4746
27
26
2
25
4
1
15
948
13
12
2423
8
7
6
IndustryStandardsComplieswithMSSSP-70Type1
Seepage6forPressureTemperatureRatings
M
C
BOpen
MaterialsofConstruction
*Notshown
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
Iron Gate Valves
No. Description Material1 Body CastIron2 Bonnet CastIron
4 Disc(2")Bronze(21/2"&3")Bronze(4"-36")CastIron
6 Body Seat Ring(2"-12")Bronze(14"-36")Bronze
7 Disc Seat Ring(4"-12")Bronze(14"-36")Bronze
8 Stem(2"-12")ManganeseBronze(14"-36")Brass
9 Yoke Sleeve(2"-12")ManganeseBronze(14"-36")DuctileIron
12 Packing Non-AsbestosRings
13Gland (1Piece)
(2"-8")DuctileIron(14"-36")DuctileIron
Gland* (10"&12")BronzeGland Flange* (10"&12")DuctileIron
15 Handwheel DuctileIron
21 HandwheelNut(2"-8")SinteredNickelSteel(10"-36")DuctileIron
23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel26 Gland Bolt (2"-12")CarbonSteel26 GlandEyebolt* (14"-36")CarbonSteel27 Gland Bolt Nut Carbon Steel
46 Yoke Cap(2"-8")DuctileIron(10"-12")CastIron
47 Yoke Cap Bolt (2"-12")CarbonSteel48 Yoke Cap Bolt Nut (2"-12")CarbonSteel49 Stem Collar Seat* (14"-36")Brass50 DiscPin* (14"-36")Brass51 Yoke Bolt* (14"-36")CarbonSteel52 Yoke Bolt Nut* (14"-36")CarbonSteel53 Yoke to Bonnet Bolt* (14"-36")CarbonSteel54 Backseat Bushing* (14"-36")Brass55 EyeboltPin* (14"-36")CarbonSteel56 Yoke* (14"-36")CastIron
ValveSize
DimensionsWT
B C M
214.75 8.00 7.00 33(375) (203) (178) (15)
2 1⁄216.06 8.00 7.50 47(408) (203) (191) (21)
317.38 8.00 8.00 58(441) (203) (203) (26)
421.44 10.00 9.00 97(545) (254) (229) (44)
525.81 10.00 10.00 135(656) (254) (254) (61)
630.31 12.00 10.50 162(770) (305) (267) (73)
837.75 14.00 11.50 280(959) (356) (292) (126)
1049.41 18.00 13.00 502(1255) (457) (330) (228)
1256.81 18.00 14.00 670(1442) (457) (356) (304)
1464.88 20.00 15.00 1093(1648) (508) (381) (496)
1675.25 22.00 16.00 1425(1911) (559) (406) (647)
18 82.00 22.00 17.00 1738(2083) (559) (432) (789)
20 90.62 24.00 18.00 2085(2302) (610) (457) (946)
24105.38 30.00 20.00 3183(2677) (762) (508) (1445)
30160.25 30.00 24.00 5795(4070) (762) (610) (2629)
36192.69 30.00 28.00 7622(4894) (762) (711) (3457)
20
Figure G-624Class 125 • Bolted Bonnet • OS&Y • All Iron • Flanged Ends
21
4746
48
2713
12
242
4
1
23
26
15
9
25
8
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
IndustryStandardsComplieswithMSSSP-70Type1
Seepage6forPressureTemperatureRatings
M
C
BOpen
MaterialsofConstruction
*Notshown
Iron Gate Valves
No. Description Material1 Body CastIron2 Bonnet CastIron4 Disc CastIron6 Seat Ring (12"-36")CastIron8 Stem CarbonSteel,NI-PLA9 Yoke Sleeve ManganeseBronze12 Packing Non-AsbestosRings
13 Gland(2"-8")Ductile(10"-36")CarbonSteelZN-PLA
15 Handwheel Ductile
21 HandwheelNut(2"-10")SinteredNickelSteel(12"-36")Ductile
23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel26 Gland Bolt Carbon Steel27 Gland Bolt Nut CarbonSteel,ZN-PLA46 Yoke Cap Ductile47 Yoke Cap Bolt Carbon Steel48 Yoke Cap Bolt Nut Carbon Steel55 GLDFollower* (10"-36")Ductile
ValveSize
DimensionsWT
B C M
214.75 8.00 7.00 33(375) (203) (178) (15)
2 1⁄216.06 8.00 7.50 47(408) (203) (191) (21)
317.38 8.00 8.00 58(441) (203) (203) (26)
421.44 10.00 9.00 97(545) (254) (229) (44)
525.81 10.00 10.00 135(656) (254) (254) (61)
630.31 12.00 10.50 162(770) (305) (267) (73)
837.75 14.00 11.50 280(959) (356) (292) (126)
1049.41 18.00 13.00 502(1255) (475) (330) (228)
1256.81 18.00 14.00 670(1442) (457) (356) (304)
1464.38 20.00 15.00 1093(1635) (508) (381) (497)
1675.25 22.00 16.00 1425(1911) (559) (406) (647)
1882.00 22.00 17.00 1738(2083) (559) (432) (790)
2090.62 24.00 18.00 2085(2302) (610) (457) (911)
24105.28 30.00 20.00 3183(2674) (762) (508) (1446)
30129.62 36.00 24.00 5795(3292) (914) (610) (2360)
36155.62 42.00 28.00 7522(3953) (1067) (711) (3417)
21
Figure G-675Class 150 • U-Bolt Bonnet • Rising Stem • All Iron • Threaded Ends
12
4
6
2
1
3
11
7
5
8
9
13
BOpen
C
M
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
Temperature Working Pressures, Non-shock
Valve ¼" - 2" 2½" - 4" Ratings (6mm - 50mm) (65mm - 100mm) 150 psi, Sat. Steam 125 psi, Sat. Steam °F °C PSI kPa PSI kPa -20to150 -30to65 225 1550 175 1210 200 93 210 1450 165 1140 225 107 200 1380 160 1100 250 121 190 1310 150 1030 275 135 185 1280 145 1000 300 149 175 1210 140 970 325 163 165 1140 135 930 350 177 160 1100 125 860 375 191 150 1030 120 830
MaterialsofConstruction
*Notshown
Malleable Iron Gate Valves
No. Description Material1 Body MalleableIron2 Bonnet MalleableIron3 Disc MalleableIron4 Stem NickelPlatedSteel5 Packing AsbestosFree6 Gland NickelPlatedSteel7 PackingNut MalleableIron8 Gasket AsbestosFree9 “U”Bolt MildSteel10 “U”BoltNuts* MildSteel11 IdentificationPlate Aluminum12 HandwheelNut MildSteel13 Handwheel MalleableIron
ValveSize
DimensionsWT
B C M
1⁄45.08 2.06 3.00 1.40(129) (52) (76) (0.64)
3⁄85.08 2.06 3.00 1.40(129) (52) (76) (0.64)
1⁄25.08 2.06 2.06 1.86(129) (52) (52) (0.84)
3⁄46.18 2.56 2.32 2.44(157) (65) (59) (1.10)
17.40 2.76 2.56 3.53(188) (70) (65) (1.60)
11⁄48.90 3.07 2.87 5.80(226) (78) (73) (2.63)
11⁄29.96 3.62 3.15 7.00(253) (92) (80) (3.17)
211.61 4.06 3.62 11.20(295) (103) (92) (5.08)
21⁄212.91 4.76 4.13 19.20(328) (121) (105) (8.71)
315.35 5.98 4.57 23.10(390) (152) (116) (10.47)
419.76 9.02 5.55 52.67(502) (229) (141) (23.61)
22
Figure G-679Class 150 • U-Bolt Bonnet • Rising Stem • Bronze Trim • Threaded Ends
12
4
6
2
1
3
11
7
5
8
14
9
13
Temperature Working Pressures, Non-shock
Valve ¼" - 2" 2½" - 4" Ratings (6mm - 50mm) (65mm - 100mm) 150 psi, Sat. Steam 225 psi, CWP 125 psi, Sat. Steam 175 psi, CWP °F °C PSI kPa PSI kPa -20to150 -30to65 225 1550 175 1210 200 93 210 1450 165 1140 225 107 200 1380 160 1100 250 121 190 1310 150 1030 275 135 185 1280 145 1000 300 149 175 1210 140 970 325 163 165 1140 135 930 350 177 160 1100 125 860 375 191 150 1030 120 830
MaterialsofConstruction
*Notshown
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
BOpen
C
M
Malleable Iron Gate Valves
No. Description Material1 Body MalleableIron2 Bonnet MalleableIron3 Disc Bronze4 Stem Brass5 Packing AsbestosFree
6 Gland(½"-3")RodBrass(4")Bronze
7 PackingNut MalleableIron8 Gasket AsbestosFree9 “U”Bolt MildSteel10 “U”BoltNuts* MildSteel11 IdentificationPlate Aluminum12 HandwheelNut MildSteel13 Handwheel MalleableIron14 Body Seat Rings Bronze
ValveSize
DimensionsWT
B C M
1⁄45.08 2.06 3.00 1.40(129) (52) (76) (0.64)
3⁄85.08 2.06 3.00 1.40(129) (52) (76) (0.64)
1⁄25.08 2.06 2.06 1.76(129) (52) (52) (0.80)
3⁄46.18 2.56 2.32 2.44(157) (65) (59) (1.10)
17.40 2.76 2.56 3.53(188) (70) (65) (1.60)
11⁄48.90 3.07 2.87 5.80(226) (78) (73) (2.63)
11⁄29.96 3.62 3.15 7.00(253) (92) (80) (3.17)
211.61 4.06 3.62 11.20(295) (103) (92) (5.08)
21⁄212.91 4.76 4.13 19.20(328) (121) (105) (8.71)
3 15.35 5.98 4.57 23.10(390) (152) (116) (10.47)
419.76 9.02 5.55 52.10(502) (229) (141) (23.61)
23
Figure G-676Class 125 • U-Bolt Bonnet • Rising Stem • All Iron • Flanged Ends
BOpen
C
M
MaterialsofConstruction
*Notshown
12
4
6
2
1
3
11
7
5
8
9
13
Temperature Working Pressures, Non-shock
Valve 1" - 2" 2½" - 4" Ratings (25mm - 50mm) (65mm - 100mm) 200 psi, CWP 175 psi, CWP °F °C PSI kPa PSI kPa -20to150 -30to65 200 1380 175 1210 200 93 185 1280 165 1140 225 107 175 1210 160 1100 250 121 165 1140 150 1030 275 135 155 1070 145 1000 300 149 145 1000 140 970 325 163 135 930 135 930 350 177 130 900 125 860 375 191 120 830 120 830
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
Malleable Iron Gate Valves
No. Description Material1 Body MalleableIron2 Bonnet MalleableIron3 Disc MalleableIron4 Stem N/platedSteel5 Packing AsbestosFree6 Gland NiPlatedSteel7 PackingNut MalleableIron8 Gasket AsbestosFree9 “U”Bolt MildSteel10 “U”BoltNuts* Steel11 IdentificationPlate Aluminum12 HandwheelNut MildSteel13 Handwheel MalleableIron
Valve Size
DimensionsWT
B C M
17.40 2.76 3.19 5.50(188) (70) (81) (2.49)
11⁄29.96 3.62 3.74 10.40(253) (92) (95) (4.71)
211.61 4.06 4.25 14.30(295) (103) (108) (6.48)
21⁄212.91 4.76 4.92 22.00(328) (121) (125) (9.97)
315.35 5.98 5.08 32.00(390) (152) (129) (14.50)
419.76 9.02 6.77 60.00(502) (229) (172) (27.19)
24
IndustryStandardsComplieswithMSSSP-70Type1andWW-V-58,Type1,Class1Seepage6forPressureTemperatureRatings
1810
15
8
20
721
11
196
22
34
1
9
141723
2
12
5
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
M
C
B
Iron Gate ValvesFigure F-661
Class 250 • Bolted Bonnet • Non-Rising Stem • Bronze Trim • Flanged Ends
MaterialsofConstruction
*Notshown
No. Description Material1 Body CastIron2 Bonnet CastIron
3 Disc(2"-4")Bronze(6"-12")CastIron
4 Seat Ring Bronze5 Disc Ring (6"-12")Bronze
6 Stem(2"-8")ManganeseBronze(10")NavalBrass(12")ManganeseBronze
7 StuffingBox(2"-4")Ductile(6"-12")CastIron
8 Gland(2"-4")Ductile(6"-12")Bronze
9 Gland Flange (6"-12")Ductile10 Handwheel Ductile11 Bonnet Bolts Carbon Steel12 Bonnet Bolt Nuts Carbon Steel13 StuffingBoxBolts* Carbon Steel
14Gland Studs (21/2"-6")CarbonSteelGland Bolts (2",8"-12")CarbonSteel
15 Gland Stud or Bolt Nuts SteelEZP16 StuffingBoxStuds* Carbon Steel17 StuffBoxStud-BoltNuts Carbon Steel18 HandwheelNut Carbon Steel19 Bonnet Gasket Non-AsbestosSheet20 Packing Non-AsbestosRings21 StuffingBoxGasket Non-AsbestosSheet22 Disc Bushing Bronze23 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B C M
211.94 8.00 8.50 47(303) (203) (216) (21)
2 1⁄212.94 8.00 9.50 84(328) (203) (241) (38)
314.50 10.00 11.12 113(368) (254) (282) (51)
417.38 12.00 12.00 175(441) (305) (305) (79)
623.00 16.00 15.88 335(584) (406) (403) (151)
830.75 20.00 16.50 545(781) (508) (419) (246)
1036.00 22.00 18.00 854(914) (559) (457) (385)
1239.75 24.00 19.75 1250(1010) (610) (502) (563)
25
IndustryStandardsComplieswithMSSSP-70Type1andWW-V-58,Type1,Class1
Seepage6forPressureTemperatureRatings
BOpen
C
M
21
47
48
27
2612
2
25
7
6
1
9
46
13
24
23
8
4
15
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
*Notshown
MaterialsofConstruction
Iron Gate ValvesFigure F-667
Class 250 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
No. Description Material1 Body CastIron2 Bonnet CastIron
4 Disc(2"-3")Bronze(4"-12")CastIron
6 Seat Ring Bronze7 Disc Ring (4"-12")Bronze
8 Stem(2",21/2",3",4",6",8")ManganeseBronze(5",10",12")NavalBrass
9 Yoke Sleeve ManganeseBronze12 Packing Non-AsbestosRings
13 Gland(2",21/2",3",4",6")Ductile(8"-12")Bronze
14 Gland Flange*(5")CarbonSteel(8",10",12")Ductile
15 Handwheel Ductile
21 HandwheelNut(2"-6")SinteredNickelSteel(8"-12")Ductile
23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel
26Gland Bolt (2",21/2",3",4",6",8")CarbonSteelGland Stud (5",10",12")CarbonSteel
27 Gland Bolt Nut CarbonSteelEZP
46 Yoke Cap(2",21/2",3",4",6")Ductile(8")CastIron
47 Yoke Cap Bolt Carbon Steel48 Yoke Cap Bolt Nut Carbon Steel51 Yoke Hub Bolt* (5",10",12")CarbonSteel52 Yoke Hub Bolt Nut* (5",10",12")CarbonSteel53 YokePadBolt* (5",10",12")CarbonSteel
ValveSize
DimensionsWT
B C M
215.06 8.00 8.50 54(382) (203) (216) (24)
2 1⁄216.69 8.00 9.50 80(424) (203) (241) (36)
318.75 10.00 11.12 114(476) (254) (282) (52)
423.44 12.00 12.00 174(595) (305) (305) (79)
524.00 14.00 15.00 280609 356 381 127
6 31.75 16.00 15.88 332(806) (406) (403) (151)
8 39.88 18.00 16.50 600(1,012) (457) (419) (270)
10 41.75 22.00 18.00 920(1060) (559) (457) (417)
12 47.00 24.00 19.75 1400(1193) (610) (502) (635)
26
IndustryStandardsComplieswithMSSSP-71,Type1
Seepage6forPressureTemperatureRatings
*Notshown
MaterialsofConstruction
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
33
25
19
23
8
2
6
4
1
3234
B
A
Iron Check ValvesFigure G-927
Class 125 • Bolted Cap • Bronze Trim • Threaded Ends
No. Description Material1 Body CastIron2 Cap CastIron4 Disc Bronze6 Seat Ring Bronze8 HingePin AlumSiliconBronze19 Hinge Bronze23 Disc Nut Brass24 SidePlug* Brass25 DiscWasher Brass28 HingePinBushing* Brass32 Bonnet Gasket Non-AsbestosSheet33 Cap Bolt Carbon Steel34 Cap Bolt Nut Carbon Steel36 IdentificationPlate Aluminum
ValveSize
DimensionsWT
A B
26.12 4.50 18
(155) (114) (8)
2 1⁄27.25 5.38 22
(184) (137) (10)
38.00 5.88 29
(203) (149) (13)
49.25 6.62 54
(235) (168) (25)
27
IndustryStandardsComplieswithMilitarySpec.MIL-V-18436andMSSSP-71,Type1
Seepage6forPressureTemperatureRatings
233
134
8
6
33
19
25
23
4
36
*Notshown
MaterialsofConstruction
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
M
B
Iron Check ValvesFigure G-931
Class 125 • Bolted Cap • Bronze Trim • Flanged Ends
No. Description Material1 Body CastIron2 Cap CastIron
4 Disc(2"-6")Bronze(8"-24")CastIron
6 Seat Ring(2"-12")Bronze(14"-24")Bronze
7 Disc Ring(8"-12")Bronze(14"-24")Bronze
8 HingePin
(2"-8")AlumSiliconBronze(10"-12")NavalBrass(14"-16")StainlessSteel(18"-24")StainlessSteel
19 Hinge
(2"-6")Bronze(8"-12")Ductile(18"-24")Ductile(14"-16")CarbonSteel
20 Disc Stud(8"-16")Steel(18"-24")Steel
21 DiscStudPin(8"-16")18-8StainlessSteel(18"-24")Steel
23 Disc Nut(2"-6")Brass(8"-24")Steel
24 SidePlug(2"-16")Brass(18"-24")Ductile
25 DiscWasher(2"-6")Brass(8"-16")Steel
26 Lockwasher* (18"-24")Steel27 PlainWasher* (18"-24")Steel
28 HingePinBushing*(2"-12")Brass(14"-16")Bronze
32 Bonnet Gasket Non-AsbestosSheet33 Cap Bolt Carbon Steel34 Cap Bolt Nut Carbon Steel36 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B M
24.50 8.00 25(114) (203) (11)
2 1⁄25.38 8.50 30(137) (216) (14)
35.88 9.50 42(149) (241) (19)
46.62 11.50 74(168) (292) (33)
57.75 13.00 100(197) (330) (45)
68.25 14.00 125(210) (356) (56)
810.25 19.50 230(260) (495) (104)
1012.00 24.50 490(305) (622) (219)
12 13.75 27.50 660(349) (699) (317)
14 15.50 31.00 794(393) (787) (360)
16 17.63 36.00 1020(447) (914) (462)
18 19.25 36.00 1304(610) (914) (591)
20 27.62 40.00 2590(702) (1016) (1117)
24 31 46.00 3840(787) (1168) (1745)
28
M
B
MaterialsofConstruction
*Notshown† PartsindicatedarenecessaryforchangingregularvalvetooutsideleverandweightSeepage7forLeverandWeightTechnicalOrientationData
32
332
26
15
19
25
4
23
34
1
6
Iron Check Valves
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
Figure G-931 L&WClass 125 • Bolted Cap • Bronze Trim • Flanged End • Lever & Weight
No. Description Material1 Body Ferrosteel 2 Cap Ferrosteel
4 Disc(2"-6")Bronze(8")FerrosSteel
6 Body Seat Ring Bronze7 Disc Seat Ring* (8")Bronze8 HingePin*† Exelloy11 StuffingBox*† Brass12 Packing*† Non-Asbestos14 PackingNut*† Bronze15 Lever† MalleableIron
19 Hinge†(2"-6")Bronze(8")MalleableIron
20 Disc Stud* (8")Steel21 DiscStudPin* (8"18-8StainlessSteel22 HingePinKey*† Steel
23 NutforDisc(2"-6")Brass(8")Steel
24 HingePinPlug* Brass
25 DiscWasher(2"-6")Brass(8")Steel
26 Weight† CastIron27 HingePinBushing* Bronze28 LeverWasher*† Steel29 Coupling*† MalleableIron30 Gib-Key*† Steel31 LeverNut*† SteelDi-Chromate32 Gasket† Non-AsbestosSheet33 Cap Bolts Steel34 Cap Bolt Nuts Steel36 IDPlate* Aluminum
ValveSize
DimensionsWT
B M
24.50 8.00 30(114) (203) (14)
2 1⁄25.38 8.50 40(137) (216) (18)
35.88 9.50 54(149) (241) (24)
4 6.62 11.50 85(168) (292) (38)
6 8.25 14.00 137(210) (356) (62)
8 10.25 19.50 240(260) (495) (108)
10 12.00 24.50 460(305) (622) (208)
1213.75 27.50 700(349) (699) (317)
1416.88 31.00 1060(429) (787) (481)
1619.12 36.00 1500(486) (914) (682)
1824.00 38.00 1970(610) (965) (895)
2027.62 42.00 2590(702) (1067) (1117)
2431.00 46.00 3840(787) (1168) (1745)
29
IndustryStandardsComplieswithMilitarySpec.MIL-V-18436andMSSSP-71,Type1
Seepage6forPressureTemperatureRatings
33
34
36
32
19
25
23
4
1
8
2
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
*Notshown
MaterialsofConstruction
M
B
Iron Check ValvesFigure G-933
Class 125 • Bolted Cap • All Iron • Flanged Ends
No. Description Material1 Body CastIron2 Cap CastIron
4 Disc(2"-4")Ductile(6"-24")CastIron
6 Seat Ring*(5",10"-24")CastIron(2"-4",6"-8")CastIron(Integral)
8 HingePin Stainless Steel19 Hinge Ductile
20 Disc Stud(8"-16")Steel(18"-24")Steel
21 DiscStudPin(8"-16")18-8StainlessSteel(18"-24")Steel
23 Disc Nut (8"-24")Steel
24 SidePlug*(2"-12")CarbonSteel(14"-24")Ductile
25 DiscWasher (2"-12")CarbonSteel26 Lockwasher* (14"-24")Steel27 PlainWasher* (14"-24")Steel28 HingePinBushing* (2"-12")CarbonSteel32 Cap Gasket Non-AsbestosSheet33 Cap Bolt Carbon Steel34 Cap Bolt Nut Carbon Steel36 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B M
24.50 8.00 25(114) (203) (11)
2 1⁄25.38 8.50 30(137) (216) (13)
35.88 9.50 42(149) (241) (19)
46.62 11.50 74(168) (292) (33)
57.75 13.00 100(197) (330) (45)
68.25 14.00 125(210) (356) (56)
810.25 19.50 230(260) (495) (104)
1012.00 24.50 440(305) (622) (200)
1213.75 27.50 660(349) (699) (299)
1416.88 31.00 1060(429) (787) (481)
1619.12 36.00 1500(486) (914) (682)
1824.00 38.00 1970(610) (965) (895)
2027.62 42.00 2590(702) (1067) (1117)
2431.00 46.00 3840(787) (1168) (1745)
30
MaterialsofConstruction
*Notshown
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
IndustryStandardsComplieswithMSSSP-71Type1andMilitarySpecificationsMIL-V-18436GroupB,Type3,Trim5
Seepage6forPressureTemperatureRatings
1314
16
45
8
9
37
152
1
12
10
M
B
Iron Check ValvesFigure F-947
Class 250 • Bolted Cap • Bronze Trim • Flanged Ends
No. Description Material1 Body Ferrosteel2 Cap Ferrosteel
3 Disc(2"-3")Bronze
(4"-8")CastIron
4 Hinge MalleableIron
5 HingePin(2"-3")13Cr.StainlessSteel(4"-8")Bronze
6 HingePinPlug* Bronze7 Body Seat Ring Bronze8 Disc Seat Ring (4"-8")Bronze9 Disc Bolt (4"-8")Steel10 DiscNutWasher Steel12 Disc Bolt Nut Steel-DichromateFin.13 Cap Studs Steel14 Cap Stud Nuts Steel15 Gasket Non-AsbestosSheet16 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B M
25.25 10.50 46(133) (267) (21)
2 1⁄26.00 11.50 64(152) (292) (29)
36.25 12.50 90(159) (318) (41)
47.25 14.00 133(184) (356) (60)
69.00 17.50 250(229) (445) (113)
811.00 21.00 410(279) (533) (185)
31
Malleable Iron Check Valves
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
B
M
MaterialsofConstruction
3
4
98
5
2
1
67
Temperature Working Pressures, Valve Non-shock, PSI Ratings °F °C PSI kPa -20to150 -30to65 1000 6894 200 93 960 6618 250 121 925 6377 300 149 890 6136 350 177 850 5860 400 205 810 5584 450 232 775 5343 500 260 740 5102 550 288 700 4826
Figure G-975Class 300 • Threaded Cap • Y-Pattern • All Iron • Threaded Ends
No. Description Material1 Body MalleableIron2 Cap MalleableIron
3 Disc(½"&¾")MildSteel(1"-2")MalleableIron
4 Disc Hinge Nut Steel5 HingePin 13%ChromeSteel6 Hinge MalleableIron7 HingePinPlug 13%ChromeSteel8 IdentificationPlate Aluminum9 DriveScrew Steel
ValveSize
DimensionsWT
M B
1⁄22.75 1.69 1.0(70) (43) (.43)
3⁄43.27 2.00 1.50(83) (51) (.65)
14.06 2.45 2.50(103) (62) (1.11)
11⁄44.75 2.85 2.90(120) (73) (1.30)
11⁄25.40 3.29 5.80(137) (84) (2.61)
26.62 4.28 10.0(168) (109) (4.51)
32
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
MaterialsofConstruction
*2",2½",5",10",&12"Material:AluminumBronze
3
1 5
72
6
8
4
A Dia.
C Minimum
FlangeBore
B
Iron Wafer Check ValvesFigure WG-961
200 CWP • Iron Body • EPDM Seat
No. Description Material1 Body CastIron2 Disc* Stainless Steel3 Seal EPDM4 PinRetainer CastIron5 StopPin Stainless Steel6 Spring Stainless Steel7 HingePin Stainless Steel8 PlateBearing PTFE
ValveSize
DimensionsWT
A B C
24.12 2.12 2.06 5.00(105) (54) (52) (2.27)
2 1⁄24.88 2.12 2.47 7.00(124) (54) (63) (3.17)
35.38 2.25 3.06 9.00(137) (57) (78) (4.08)
46.88 2.50 4.00 13.00(175) (64) (102) (5.90)
57.75 2.75 5.00 22.00(197) (70) (127) (9.98)
68.75 3.00 6.06 31.00(222) (76) (154) (14.06)
811.00 3.75 7.97 69.00(279) (95) (202) (31.29)
1013.38 4.25 10.00 95.00(340) (108) (254) (43.08)
1216.12 5.62 11.94 156.00(409) (143) (303) (70.20)
33
Iron Wafer Check Valves
3
1
5
46
9
10
12
7
8
2
11
A Dia.
B
C Minimum
FlangeBore
MaterialsofConstruction
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
Figure WG-970Class 125 • Iron Body • Buna-N Seat
No. Description Material1 Body CastIron2 Plate AluminumBronze3 Seal Buna-N4 StopPin 316StainlessSteel5 HingePin 316StainlessSteel6 Spring 316StainlessSteel7 StopPinRetainer 316StainlessSteel8 HingePinRetainer 316StainlessSteel9 Body Bearing PTFE10 PlateBearing PTFE11 Spring Bearing PTFE
ValveSize
DimensionsWT
A B C
24.12 2.12 2.06 5.00(105) (54) (52) (2.27)
2 ½4.88 2.12 2.47 7.00(124) (54) (63) (3.17)
35.38 2.25 3.06 9.00(137) (57) (78) (4.08)
46.88 2.50 4.00 13.00(175) (64) (102) (5.90)
57.75 2.75 5.00 22.00(197) (70) (127) (9.98)
68.75 3.00 6.06 31.00(222) (76) (154) (14.06)
811.00 3.75 7.97 69.00(279) (95) (202) (31.28)
1013.38 4.25 10.00 95.00(340) (108) (254) (43.08)
1216.12 5.62 11.94 156.00(409) (143) (303) (70.75)
1417.75 7.25 12.50 203(451) (184) (316) (92.06)
1620.25 7.50 15.00 247.00(514) (191) (381) (112.02)
1821.62 8.00 16.88 303.00(549) (203) (429) (137.01)
2023.88 8.38 18.81 390.00(607) (213) (478) (176.87)
2428.25 8.75 22.62 566.00(724) (222) (575) (256.69)
3034.75 12.00 29.25 1083.00(883) (305) (743) (491.15)
3641.25 14.50 35.00 1505.00(1048) (368) (889) (682.54)
34
International Iron Globe Valves
15
2
28
302526
21
4
1
2714
13
122024
17
6
29
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
IndustryStandardsComplieswithMSSSP-85Type1
Seepage6forPressureTemperatureRatings
M
C
BOpen
MaterialsofConstruction
*Notshown
*NOTE:AllInternationalIronvalvesarepaintedgray.
Figure G-512-I*Class 125 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
No. Description Material1 Body Hi-Str.CastIron2 Bonnet Hi-Str.CastIron
4 Disc(2"-6")Bronze(8"-10")CastIron
6 Body Seat Ring Bronze7 Disc Seat Ring* (8"&10")Bronze8 Stem ManganeseBronze9 Yoke Bushing ManganeseBronze12 Packing Non-AsbestosRings
13 Gland(2"-4")Brass(5"-10")Bronze
14 Gland Flange Ductile15 Handwheel Ductile17 Disc Stem Ring Bronze20 Stem Hole Bushing Brass21 LockingDevice (2"-6")18-8SSTSheet22 Disc Guide Stem* (8"&10")Brass23 DiscGuideStemPin* (8"&10")Brass24 Bonnet Gasket Non-AsbestosSheet25 Bonnet Studs Steel26 Bonnet Stud Nuts Steel27 Gland Studs Naval Brass28 Gland Stud Nuts Brass29 HandwheelNut Steel-Phos.Coated30 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B C M
211.12 8.00 8.00 35(282) (203) (203) (15)
2 1⁄211.50 8.00 8.50 40(292) (203) (216) (18)
313.25 9.00 9.50 57(337) (229) (241) (26)
415.50 10.00 11.50 95(394) (254) (292) (43)
517.50 10.00 13.00 126(445) (254) (330) (57)
619.50 12.00 14.00 176(495) (305) (356) (80)
825.00 16.00 19.50 344(635) (406) (495) (156)
1030.50 18.00 24.50 570(775) (457) (622) (259)
35
International Iron Gate Valves
IndustryStandardsComplieswithMSSSP-70Type1
Seepage6forPressureTemperatureRatings
M
C
B
2115
13
12
2
27
26
1128
23
8
7
4
6
1
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
*NOTE:AllInternationalIronvalvesarepaintedgray.
MaterialsofConstruction
*Notshown
Figure G-612-I*Class 125 • Bolted Bonnet • Non-Rising Stem • Bronze Trim • Flanged Ends
No. Description Material
1 Body CastIron2 Bonnet CastIron
4 Disc(2"-3")Bronze(4"-12")CastIron
6 Seat Ring Bronze7 Disc Ring (4"-12")Bronze8 Stem ManganeseBronze
11 StuffingBox(2"-8")Ductile(10"-12")CastIron
12 Packing Non-AsbestosRings13 Gland Flange (2"-8")Ductile14 Gland* (10"-12")Bronze15 Handwheel Ductile21 HandwheelNut Carbon Steel23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel26 Gland Bolt Carbon Steel27 Gland Bolt Nut CarbonSteelEZP28 StuffingBoxGasket Non-AsbestosSheet34 StuffingBoxBolt* Carbon Steel35 StuffingBoxBoltNut* Carbon Steel55 GlandFollower* (10"-12")Ductile
ValveSize
DimensionsWT
B C M
211.31 8.00 7.00 30(287) (203) (178) (14)
2 1⁄212.40 8.00 7.50 40(315) (203) (191) (18)
313.25 8.00 8.00 56(337) (203) (203) (25)
416.31 10.00 9.00 90(414) (254) (229) (41)
518.00 10.00 10.00 126(457) (254) (254) (57)
620.69 12.00 10.50 152(526) (305) (267) (68)
824.12 14.00 11.50 260(613) (356) (292) (117)
1032.25 16.00 13.00 484(819) (406) (330) (220)
1236.00 18.00 14.00 685(914) (457) (356) (311)
36
International Iron Gate Valves
21
4746
27
26
2
25
4
1
15
948
13
12
2423
8
7
6
IndustryStandardsComplieswithMSSSP-70Type1
Seepage6forPressureTemperatureRatings
M
C
BOpen
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
*NOTE:AllInternationalIronvalvesarepaintedgray.
*Notshown
MaterialsofConstruction
Figure G-623-I*Class 125 • Bolted Bonnet • OS&Y • Bronze Trim • Flanged Ends
No. Description Material1 Body CastIron2 Bonnet CastIron
4 Disc(2")Bronze(21/2" &3")Bronze(4"-12")CastIron
6 Body Seat Ring Bronze7 Disc Seat Ring (4"-12")Bronze8 Stem ManganeseBronze9 Yoke Sleeve ManganeseBronze12 Packing Non-AsbestosRings
13Gland (1Piece) (2"-8")DuctileIronGland* (10"&12")BronzeGland Flange* (10"&12")DuctileIron
15 Handwheel DuctileIron
21 HandwheelNut(2"-8")SinteredNickelSteel(10"-12")DuctileIron
23 Bonnet Gasket Non-AsbestosSheet24 Bonnet Bolt Carbon Steel25 Bonnet Bolt Nut Carbon Steel
26Gland Bolt Carbon SteelGlandEyebolt Carbon Steel
27 Gland Bolt Nut Carbon Steel
46 Yoke Cap(2"-8")DuctileIron(10"-12")CastIron
47 Yoke Cap Bolt Carbon Steel48 Yoke Cap Bolt Nut Carbon Steel
ValveSize
DimensionsWT
B C M
214.75 8.00 7.00 33(375) (203) (178) (15)
2 1⁄216.06 8.00 7.50 47(408) (203) (191) (21)
317.38 8.00 8.00 58(441) (203) (203) (26)
421.44 10.00 9.00 97(545) (254) (229) (44)
525.81 10.00 10.00 135(656) (254) (254) (61)
630.31 12.00 10.50 162(770) (305) (267) (73)
837.75 14.00 11.50 280(959) (356) (292) (126)
1044.94 16.00 13.00 502(1141) (406) (330) (228)
1253.69 18.00 14.00 670(1364) (457) (356) (304)
37
International Iron Check Valves
*NOTE:AllInternationalIronvalvesarepaintedgray.
IndustryStandardsComplieswithMilitarySpec.MIL-V-18436andMSSSP-71,Type1
Seepage6forPressureTemperatureRatings
233
134
8
6
33
19
25
23
4
36
*Notshown
MaterialsofConstruction
DimensionsandWeightsInches(millimeters)-Pounds(kilograms)
M
B
Figure G-931-I*Class 125 • Bolted Cap • Bronze Trim • Flanged Ends
No. Description Material1 Body CastIron2 Cap CastIron
4 Disc(2"-6")Bronze(8"-12")CastIron
6 Seat Ring Bronze7 Disc Ring (8"-12")Bronze
8 HingePin(2"-8")AlumSiliconBronze(10"-12")NavalBrass
19 Hinge(2"-6")Bronze(8"-12")Ductile
20 Disc Stud (8"-12")Steel21 DiscStudPin (8"-12")18-8StainlessSteel
23 Disc Nut(2"-6")Brass(8"-12")Steel
24 SidePlug Brass
25 DiscWasher(2"-6")Brass(8"-12")Steel
28 HingePinBushing* Brass32 Bonnet Gasket Non-AsbestosSheet33 Cap Bolt Carbon Steel34 Cap Bolt Nut Carbon Steel36 IdentificationPlate Aluminum
ValveSize
DimensionsWT
B M
24.50 8.00 25(114) (203) (11)
2 1⁄25.38 8.50 30(137) (216) (14)
35.88 9.50 42(149) (241) (19)
46.62 11.50 74(168) (292) (33)
57.75 13.00 100(197) (330) (45)
68.25 14.00 125(210) (356) (56)
810.25 19.50 230(260) (495) (104)
1012.00 24.50 490(305) (622) (219)
12 13.75 27.50 660(349) (699) (317)
38
2.Fromthatpoint,drawanotherlinethroughthevalvesize,forexamplethe8-inchsize,andestablishapointonIndex2.Nowmovehorizontallytothediagonalpressuredroplineontherightside.Wheretheselinesintersect, thepressuredropis7.5psiforthe8-inch,Class250globevalveand8.5psiforthe8-inchClass250anglevalve.
ChartsolutionsresultinginapointonIndex2thatfallsbelowtheLineA-AforClass250valvesindicatethediscwillnotbefullyliftedundertheflowconditionsused.Operationundersuchconditionsisnotrecommendedbut,attimes,mustbetoleratedforshortperiodsduringthelowloads.
3.EnterthechartwhereLineA-AintersectsIndex2forClass250valves.Movediagonallyupwardthroughthesizebeinginvestigated(8-inch)andestablishasecondpointonIndex1.Fromthispoint,extendalinetothespecificvolumeestablishedinStep1andatitsintersectionwiththeflowrateline,read48,000Lb/Hastheminimumflowrateatwhichthediscwillbeinthefullyliftedposition.Thepressuredropatthisflowrateis1.9psiforglobeand2.1psiforanglevalves.
4.RepeatSteps2and3forotherpossiblevalvesizes,tabulateresults,andmakesizeselectiononbasisofpressuredropanddurationofpartialdiscliftconsiderations.
DottedlinesonDemandCurveindicateminimumflowratesforwideopen8"and10"valves.
5.Thebestchoiceforthisexamplewouldbethe10"sizebecausepressuredropismuchloweranddurationofpartiallylifteddiscisonlyslightlygreaterthanforthe8"size.
6.Pressuredropforanyintermediateflowconditioncanbedeterminedas outlined in Steps 1 and 2.
7. Valves require aminimum of 50 psi differential pressure to seat thevalve.
Selecting the Proper Size –Determining Pressure DropSincestop-checkvalveshaveafloatingdiscmember,itisimportantthevalvebesizedtoprovidefulldiscliftunderflowconditionsprevailingduringthemajorportionoftheservicelife.Ifthevalveistoolarge,thediscwillfloatinapartiallyopenpositionandmaycauseflutteringofthediscandrapidwear.
Conversely,ifthevalveistoosmall,pressuredropwillbeexcessive.The chart on the following page is a graphic presentation of flow datadeterminedbytest.Itsuseoffersasimplemethodofdeterminingthebestsizestop-checkvalve,aswellasthepressuredropundervaryingconditionsofflow,withoutanycomputation.
How to Use the ChartShown on the Following PageGiven: SteamPressure-Temperature...250psig450°F FlowRate...TypicalDailyDemandCurve
Find: ValveCatalogNo.andthebestsizeforaboveinstallation.
Solution: 1.EntertheTemperaturechartat450°F.Moveverticallyupwardtothe
curvedlinefor250psi, thenhorizontallytotherighttoestablishapointonthespecificvolumescale.Fromthispoint,drawalinethroughtheflowratebeinginvestigated(100,000Lb/H)andestablishapointonIndex1.
Valve Press drop @ Max.Min. Flow Rate for Size Flow rate (100,000 #/Hr.), psi Wide open valve
(Inches) Globe Angle #/Hr.
6 20.5 22.5 26,500 8 7.5 8.5 48,000 10 3.3 3.6 68,000
12Midnight
12Midnight
6AM
12Noon
6PM
0
TIME OF DAY
Typical Daily Load-Demand Curve
RA
TE
OF
FLO
W IN
PO
UN
DS
PE
R H
OU
R
10,000
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
10-Inch Valve
8-Inch Valve
Iron ValvesTechnical Data
Y-Pattern Stop Check Valve
39
Iron ValvesS
tock
ham
Bo
lted
Bo
nn
et S
top
-Ch
eck
Val
ves
Sel
ecti
ng
th
e P
rop
er S
ize
– D
eter
min
ing
Pre
ssu
re D
rop
Technical DataY-Pattern Stop Check Valve
40
Iron Valves
Asshowninthesediagrams,StockhamY-Patternstop-checkvalves used in a boiler installation can be positioned forhorizontalorupwardflow.ThepropermethodfordrainingbothY-patternstop-checkvalvesandisolationgatevalvesisshownfortypicalmountingpositions.Tappedandpluggeddrain holes are furnished. For top efficiency, be sure thepropersizevalveisused.
BOILER
BOILER
BOILER
BOILER
DRAIN
DRAIN
DRAIN
DRAIN
DRAIN
DRAIN
HEADER
HEADER
HEADER
HEADER
Straight-WayY-Pattern
Installed in ahorizontal line
Straight-WayY-Pattern
Installed in a vertical linefor upward flow
Angle Y-PatternInstalled for upward-
to-horizontal flow
Angle Y-PatternInstalled for
horizontal-to-downward flow
Installation RecommendationsY-Pattern Stop-Check and Isolation Gate Valves
41
Iron Valves
Notes
42
Iron Valves
Notes
®
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